Welcome to PC.
I can relate to you and have done a countless things that are embarrassing or that I regret while manic. Therapy helps with certain situations, but time does heal in ways. I am reminded of certain different decisions and when things become a pattern while manic, the same mistakes keep happening. Actually, I am currently feeling sad about a lot of my mistakes. Some embarrassing moments I am able to laugh at now. Humor is an important coping tool to me, and I try to laugh at myself over certain things.
Recent decisions are still following though, usually involving money, being involved with the wrong people, and acting out/saying things in social situations or with friends that make me cringe. Years back, some delusions that became grandiose even affected my decisions at work.
I became very rebellious and thought I had healing powers. All rules go out the window when in a euphoric state of mania.